title: [Mechanics of the characteristic geometry of the human spine undergoing vertical pressure].
abstract: Since MAGENDIE in 1816, it has been a common assertion in books of Anatomie that curves of the spine increase its strength. This increase in strength has been estimated by a formula attributed to EULER: R = nc2 + 1 in which R is the strength and nc2 stands for the square of the number of curves. Applying the actual law of Euler on the strength of beams submitted to a vertical effort, the authors conclude that strength is increased by about 30% and not multiplied by 10, 16 or even 17 as is often falsely written.
authors.affiliation: Laboratoire d'Anatomie, Faculté de Médecine, Clermont-Ferrand.
authors.forename: M
authors.initials: M
authors.lastname: Guillot
authors.forename: J
authors.initials: J
authors.lastname: Fournier
authors.forename: T
authors.initials: T
authors.lastname: Scheye
authors.forename: G
authors.initials: G
authors.lastname: Escande
authors.forename: J
authors.initials: J
authors.lastname: Chazal
authors.forename: A
authors.initials: A
authors.lastname: Tanguy
authors.forename: G
authors.initials: G
authors.lastname: Vanneuville
mesh_terms: D001696:Biomechanical Phenomena; D006801:Humans; D008433:Mathematics; D011312:Pressure; D013131:Spine / Q000502:physiology*
vernacular_title: Justification mécanique approchée de la géométrie particulaière du rachis humain soumis à contrainte verticale.